sub out()

in ring/crypto/perlasm/x86_64-xlate.pl [388:437]

• 48 lines of code
• 24 McCabe index (conditional complexity)

    sub out {
	my $self = shift;

	if ($gas) {
	    my $func = ($globals{$self->{value}} or $self->{value}) . ":";
	    if ($win64	&& $current_function->{name} eq $self->{value}
			&& $current_function->{abi} eq "svr4") {
		$func .= "\n";
		$func .= "	movq	%rdi,8(%rsp)\n";
		$func .= "	movq	%rsi,16(%rsp)\n";
		$func .= "	movq	%rsp,%rax\n";
		$func .= "${decor}SEH_begin_$current_function->{name}:\n";
		my $narg = $current_function->{narg};
		$narg=6 if (!defined($narg));
		$func .= "	movq	%rcx,%rdi\n" if ($narg>0);
		$func .= "	movq	%rdx,%rsi\n" if ($narg>1);
		$func .= "	movq	%r8,%rdx\n"  if ($narg>2);
		$func .= "	movq	%r9,%rcx\n"  if ($narg>3);
		$func .= "	movq	40(%rsp),%r8\n" if ($narg>4);
		$func .= "	movq	48(%rsp),%r9\n" if ($narg>5);
	    }
	    $func;
	} elsif ($self->{value} ne "$current_function->{name}") {
	    # Make all labels in masm global.
	    $self->{value} .= ":" if ($masm);
	    $self->{value} . ":";
	} elsif ($win64 && $current_function->{abi} eq "svr4") {
	    my $func =	"$current_function->{name}" .
			($nasm ? ":" : "\tPROC $current_function->{scope}") .
			"\n";
	    $func .= "	mov	QWORD$PTR\[8+rsp\],rdi\t;WIN64 prologue\n";
	    $func .= "	mov	QWORD$PTR\[16+rsp\],rsi\n";
	    $func .= "	mov	rax,rsp\n";
	    $func .= "${decor}SEH_begin_$current_function->{name}:";
	    $func .= ":" if ($masm);
	    $func .= "\n";
	    my $narg = $current_function->{narg};
	    $narg=6 if (!defined($narg));
	    $func .= "	mov	rdi,rcx\n" if ($narg>0);
	    $func .= "	mov	rsi,rdx\n" if ($narg>1);
	    $func .= "	mov	rdx,r8\n"  if ($narg>2);
	    $func .= "	mov	rcx,r9\n"  if ($narg>3);
	    $func .= "	mov	r8,QWORD$PTR\[40+rsp\]\n" if ($narg>4);
	    $func .= "	mov	r9,QWORD$PTR\[48+rsp\]\n" if ($narg>5);
	    $func .= "\n";
	} else {
	   "$current_function->{name}".
			($nasm ? ":" : "\tPROC $current_function->{scope}");
	}
    }